blogfast25
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Unusual notation...
I'm reading this thesis, in particular a bit about making a Sn standard solution:
https://spiral.imperial.ac.uk/bitstream/10044/1/16953/2/Radziszewska-F-1963-PhD-Thesis.pdf
There's this strange (and unknown to me) turn of phrase:
"[...] and covered with 30 ml of (1 + 5) hydrochloric acid [...]"
Anyone know what (1 + 5) hydrochloric acid means?
Bear in mind the document was written in 1963!
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Mr.Fluorine
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I just think it means that you should use hydrochloric acid that has a concentration of about 16%, 1 part HCl to 5 parts water.
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unionised
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1 part conc HCl. 5 parts water
So, very roughly 6% or 2 Molar.
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blogfast25
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Funny: a little higher they use 2N HCl (i.e. 2M), so they might as well have continued with that.
Thanks!
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